import java.util.ArrayList;
import java.util.List;
import java.util.Random;
public class Game {
    public static final String[] SUITS = {"♥","♠","♣","♦"};
    //制造扑克牌
    public List<Card> createCards(){
        List<Card> cardList = new ArrayList<>();
        for(int i = 0; i < SUITS.length; i++){
            for(int j = 1; j <= 13; j++ ){
                Card card = new Card(SUITS[i],j);
                cardList.add(card);
            }
        }
        Card card1 = new Card("Great King",1);
        Card card2 = new Card("Little King",1);
        cardList.add(card1);
        cardList.add(card2);
        return cardList;
    }
    //洗牌
    public void shuffle(List<Card> cardList){
        Random random = new Random();
        for(int i = cardList.size() - 1; i > 0; i--){
            int randIndex = random.nextInt(i);
            swap(cardList,i,randIndex);
        }
    }

    private void swap(List<Card> cardList, int i, int j){
        Card tmp = cardList.get(i);
        cardList.set(i,cardList.get(j));
        cardList.set(j,tmp);
    }

    /**
     * 三个人，轮流抓牌，各共抓5张
     */
    public List<List<Card>> play(List<Card> cardList){
        List<List<Card>> hand = new ArrayList<>();
        List<Card> hand0 = new ArrayList<>();
        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();

        hand.add(hand0);
        hand.add(hand1);
        hand.add(hand2);

        for(int i = 0; i < 5; i++){
            for(int j = 0; j < 3; j++){
                Card card = cardList.remove(0);
                hand.get(j).add(card);
            }
        }
        return hand;
    }
}
